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The System Event Notification Service enables mobile-aware applications to receive notifications from system events that SENS monitors. When the requested event occurs, SENS notifies the application.
SENS can notify applications about three classes of system events:
- TCP/IP network events, such as the status of a TCP/IP network connection or the quality of the connection.
- User logon events.
- Battery and AC power events.
For example, an application can subscribe to any of the following system events:
- Establishment of network connectivity
- Notification when a specified destination can be reached within specified Quality of Connection (QOC) parameters
- The computer has switched to battery power
- The percentage of remaining battery power is within a specified parameter
- Scheduled events using Synchronization Manager occur
Windows Server 2008 R2 and Windows 7: The subscriber has a maximum of 3 minutes to respond to a notification on the ISensLogon and ISensLogon2 interfaces. After 3 minutes, SENS cancels the call to subscribers and unblocks the notification thread. If a lengthy operation is required to respond to the notification, return from ISensLogon or ISensLogon2 as quickly as possible and open another thread for processing.